Characteristics of Ozone Pollution in Tai’an and Topographic Effects of Mount Tai
Yanzhen Ge,
Chunqiang Chen,
Yaping Jiang,
Tongsuo Yang,
Hongyang Kang,
Jingzhong Li,
Xinran Zhao,
Yibo Zhang,
Mengying Li,
Tangyan Hou,
Jianmin Chen,
Shaocai Yu
Affiliations
Yanzhen Ge
Tai’an Ecological Environment Protection and Control Center, Tai’an Ecological Environment Bureau, Tai’an 271000, China
Chunqiang Chen
Shandong Academy of Environmental Sciences Co., Ltd., Jinan 250000, China
Yaping Jiang
Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education, Research Center for Air Pollution and Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
Tongsuo Yang
Shandong Academy of Environmental Sciences Co., Ltd., Jinan 250000, China
Hongyang Kang
Beijing Insights Value Technology Co., Ltd., Beijing 100000, China
Jingzhong Li
Tai’an Ecological Environment Protection and Control Center, Tai’an Ecological Environment Bureau, Tai’an 271000, China
Xinran Zhao
Tai’an Ecological Environment Protection and Control Center, Tai’an Ecological Environment Bureau, Tai’an 271000, China
Yibo Zhang
Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education, Research Center for Air Pollution and Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
Mengying Li
Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education, Research Center for Air Pollution and Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
Tangyan Hou
Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education, Research Center for Air Pollution and Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
Jianmin Chen
Research Center of Analysis and Measurement, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China
Shaocai Yu
Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education, Research Center for Air Pollution and Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
Through the analyses of the observed concentrations of ozone (O3) in Tai’an from 2016 to 2021, the results show that O3 pollution was relatively serious, with the mean concentrations of the 90th percentile of daily maximum 8-h O3 (O3-8h-90per) above 180 μg/m3. O3 pollution in Tai’an mainly occurred from May to September, accounting for 69%~100% of the total O3 pollution days, of which the most serious pollution occurred in June. Combined with the analyses of temperature, humidity, and wind speeds, the probability of O3 exceedances in Tai’an increased significantly under the conditions with the temperatures higher than 30 °C, the relative humidity of 20%~40%, and the wind speeds of 1~3 m/s. The dominant wind directions on O3 pollution days in Tai’an were southerly winds, based on the analyses of wind directions and their clustering trajectories. Based on the results at three monitoring stations at different distances from Mount Tai from May to September in 2021, the average O3 concentrations at the Renkou School station near the mountain was about 13~15 μg/m3 higher than those at the other two stations (Dianli College and Shandong First Medical University) which are far away from the mountain, indicating that the Renkou School site was more affected by the obstruction of the mountain. In addition, the WRF-CMAQ model was used to simulate ten O3 pollution events in 2021, showing that the average O3 concentrations in Tai’an were reduced by 1.7~7.5 μg/m3 after changing the topographic height of Mount Tai.
